Abstract: Plasticizer migration-resistant, UV-curable hotmelt adhesive for graphics films and labels made of plasticized PVC Described here is a UV-curable hotmelt adhesive largely resistant to plasticizer migration and comprising a UV-crosslinkable poly(meth)acrylate formed from methyl acrylate, C4-18 alkyl (meth)acrylate, monomer with acid groups, copolymerized photoinitiator and optionally further monomers. The hotmelt adhesive further comprises an aliphatic polyester polymer. The use of the hotmelt adhesive on graphics films and self-adhesive labels made of plasticized PVC is also described.

Abstract: Methods for making paper with improved strength and methods for improving paper strength, using a metal chelate and an organic polymer, and improved strength paper made through these processes.

Abstract: An N-vinyl amide polymer is disclosed. The N-vinyl amide polymer is a reaction product of: a monomer component comprising an N-vinyl amide; and a chain transfer agent of the formula: wherein each occurrence of R1 is independently a C1-20 alkylene, a C1-20 heteroalkylene, a C3-20 cycloalkylene, a C3-20 heterocycloalkylene, a C6-20 arylene, or a combination thereof, and R1 is substituted or unsubstituted; R2 is a divalent or multivalent organic group having 2 to 40 carbon atoms; and n is at least 2.

Abstract: The invention relates to a functionalized laminated optical element comprising: —An optical base element; —A functional film structure consisting of a single layer or a multilayer structure; —A layer of a pressure-sensitive adhesive of optical quality, placed between one surface of the optical base element and the functional film structure so as to permanently retain said functional film structure on the surface of the optical base element. Said functionalized laminated optical element maintains its integrity after typical processing of an optical article which includes wheel edging. More particularly the invention relates to the use of a specific adhesive system for improving the wheel edging resistance of functionalized laminated optical element. The functional laminated optical may be an ophthalmic lens.

Abstract: The present disclosure relates to polymer coatings covalently attached to the surface of a substrate and the preparation of the polymer coatings, such as poly(N-(5-azidoacetamidylpentyl)acrylamide-co-acrylamide) (PAZAM), in the formation and manipulation of substrates, such as molecular arrays and flow cells. The present disclosure also relates to methods of preparing a substrate surface by using beads coated with a covalently attached polymer, such as PAZAM, and the method of determining a nucleotide sequence of a polynucleotide attached to a substrate surface described herein.

Abstract: A method of manufacturing self-healing polymer capable of controlling physical properties is provided. The method includes forming the self-healing polymer by adjusting a copolymer composition using monomers of glycidyl methacrylate (GMA) and 2-hydroxyethyl acrylate (HEA) and an initiator of tert-butyl peroxide (TBPO) based on an initiated chemical vapor deposition method (iCVD).

Abstract: This invention relates to an additive based on (co)polymers resulting from the reaction between at least one dialdehyde compound and at least one complex (co)polymer obtained by polymerization of water-soluble monomers in the presence of at least one host (co)polymer comprising vinylamine functions.

Abstract: The present invention relates to a complex of polymers and to the use thereof in a method of making paper, cardboard or the like. This complex of polymers is obtained by polymerizing water-soluble monomers: in the presence of a host polymer that comprises vinylamine functions and of a non-polymeric transfer agent, and in the absence of a branching or crosslinking agent of the ethylenic polyfunctional type. It is obtained as from a mass ratio of anionic monomer to water that is greater than 0.035.

Abstract: The present disclosure provides a light curing non-transparent material for 3D printing and a preparation method thereof, a 3D printed product and a 3D printer. The light curing non-transparent material for 3D printing provided by the present disclosure can be used to print non-transparent 3D printed products without adding white pigments such as white pigments powder, and therefore has the characteristic of high stability, and also ensures fluency of the 3D printing process, good quality of the 3D printed products, as well as good performances of the 3D printer that containing light curing non-transparent material for 3D printing.

Abstract: A system of topographic patterns for the prevention of bacterial adhesion and biofilm formation. The patterns may be provided on the surfaces of certain devices that are prone to bacterial adhesion and biofilm formation, such as urinary catheters. To reduce bacterial adhesion and biofilm formation, and to remove existing biofilms, the patterns are induced to transform from a first topography to a second topography. For example, the surface patterns may be formed from a shape memory polymer and then heated to transform the patterns from the first topography to the second topography to dislodge bacteria and prevent fouling.

Abstract: A graft copolymer is provided herein. The graft copolymer includes a polymeric backbone. The polymeric backbone includes a cyclic amine-containing moiety. The graft copolymer further includes a first side chain bound to the polymeric backbone, wherein the first side chain includes an acid-containing moiety. The graft copolymer further includes a second side chain bound to the polymeric backbone, wherein the second side chain includes an alkoxylated moiety. Another graft copolymer is provided herein. The graft copolymer includes a polymeric backbone. The polymeric backbone includes a quaternary ammonium moiety formed from a reaction of an amine-containing moiety and an alkylation agent. The graft copolymer further includes a first side chain bound to the polymeric backbone, wherein the first side chain includes an acid-containing moiety. The graft copolymer further includes a second side chain bound to the polymeric backbone, wherein the second side chain includes an alkoxylated moiety.

Abstract: We have demonstrated reversibly reducing metal-ion crosslinkages in polymer systems, by harnessing light, creating a dynamic and reversible bond. The reduction induces chemical and physical changes in the polymer materials. Some variations provide a polymer composition comprising: a polymer matrix containing one or more ionic species; one or more photosensitizers; and one or more metal ions capable of reversibly changing from a first oxidation state to a second oxidation state when in the presence of the photosensitizers and light. Some embodiments employ urethane-based ionomers capable of changing their crosslinked state under the influence of a change in counterion valance, using light or chemical reducing agents. This invention provides films, coatings, or objects that are reversible, re-mendable, self-healing, mechanically adjustable, and/or thermoplastic/thermoset-switchable.

Abstract: A method of improving dry strength and/or drainage of a paper or paperboard by adding to a paper or paperboard furnish, a graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer graft copolymer.

Abstract: The present invention is directed to a copolymer comprising: a polymeric backbone chain derived from a monomer comprising at least one conjugated diolefin monomer and optionally at least one vinyl aromatic monomer; and a polymeric side-chain bonded exclusively to a terminal end of the backbone chain, the side-chain comprising a polymer derived from a monomer having a hydrogen bond donor moiety and a hydrogen bond acceptor moiety.

Abstract: The present invention is directed to a copolymer comprising: a polyisoprene backbone chain with a microstructure comprising grater than 98 percent by weight of cis 1,4 linkages; and polymeric sidechains bonded to the backbone chain, the sidechains comprising a polymer derived from a monomer having a hydrogen bond donor site and a hydrogen bond acceptor site.

Abstract: It is proposed a new fluid loss control agent useful for the cementation of oil or gas wells. This fluid loss control agent consists of a mixture of a styrene-butadiene latex and a high molecular weight water-soluble polymer such as a copolymer AMPS-Am. The addition of the water-soluble polymer allows drastic reduction of the quantity of latex required to achieve fluid loss control performance and even gas migration control.

Abstract: Reaction products AE of vinyl copolymers A having at least one functional group per molecule, with multifunctional compounds E derived from epoxide functional compounds having, on average, at least two functional groups per molecule, which reaction products AE have structural elements derived from ethylenically unsaturated monomers, and beta-hydroxy alkylene imine, —NR—CH2—CR?(OH)—, or the corresponding ammonium structure, where R and R?, independently from each other, stand for H or an alkyl group having from 1 to 8 carbon atoms, a process for their preparation, and a method of use thereof as binders for waterborne coating compositions.

Abstract: There are described q oligomer-polymer composition [optionally substantially free of styrene (<1.5 wt-% of copolymer)] comprising oligomer composition O having a weight average molecular weight of from 1000 to 150,000 g/mol (measured by GPC) and polymer composition P having a weight average molecular weight of at least 80,000 g/mol (measured by GPC) the oligomer composition O and the polymer composition P each independently comprising a copolymer composition comprising: (a) at least 8.5 wt-% preferably >=20 wt-% of a higher itaconate diester (preferably dibutyl itaconate—DBI); (b) less than 23 wt-% acid monomer but also sufficient to have an acid value less than 150 mg KOH/g of polymer, (c) optionally with less than 50 wt-% of other itaconate monomers, and (d) optionally less than 77 wt-% of other monomers not (a) to (c). The DBI may be biorenewable. One embodiment is an aqueous dispersion of vinyl sequential polymer of two phases: A) 40 to 90 wt-% of a vinyl polymer A with Tg from ?50 to 30° C.

Abstract: A binder resin composition for secondary battery electrodes is described as containing a polymer (A) that has a structural unit represented by general formula (1) and a water-insoluble particulate polymer (B-1) and/or a water-soluble polymer (B-2) where (A), (B-1) and (B-2) are defined as described. A slurry for secondary battery electrodes contains the binder resin composition, an active material and a solvent. An electrode for secondary batteries is provided with a collector and an electrode layer that is arranged on the collector, where the electrode layer contains an active material and the binder resin composition. Alternatively, the electrode layer is obtained by applying the slurry for secondary battery electrodes to the collector, and drying the slurry thereon.

Abstract: A coating composition including a reinforcing agent. The coating composition may include one or more radiation-curable monofunctional monomers, one or more radiation-curable multifunctional monomers or oligomers, a photoinitiator, and a reinforcing agent. The monofunctional monomers, multifunctional monomers, and multifunctional oligomers may include acrylate groups. The reinforcing agent may be an acrylic co-polymer that includes two or more repeat units. At least one of the repeat units includes chemical groups that enable self-association of the acrylic co-polymer. Self-association of the acrylic co-polymer may improve the tensile strength of coatings formed from the coating compositions.

Abstract: An acrylic pressure-sensitive adhesive composition for optical use includes: an acrylic polymer (A) that contains, as a monomer unit, a vinyl monomer having a nitrogen atom in its backbone and that does not substantially contain a carboxyl group-containing monomer; and a (meth)acrylic polymer (B) having a weight average molecular weight of 1000 or more and less than 30000.

Abstract: A method for producing a resin composition, comprising the step of: subjecting a radical copolymerization of a first radical polymerizable monomer which is free from any crystalline molecular chain, and a second radical polymerizable monomer having a crystalline molecular chain, in the presence of a radical polymerization initiator, wherein the second radical polymerizable monomer is the following compound, and (wherein R1 denotes a hydrogen atom or a methyl group, and R2 denotes an alkyl group having at least 17 carbon atoms) the first radical polymerizable monomer has a particular reactivity ratio.

Abstract: The invention relates to a hydrophilic coating formulation which when cured results in a hydrophilic coating, wherein the hydrophilic coating formulation comprises a polyelectrolyte and a non-ionic hydrophilic polymer. The invention further relates to a coating system, a hydrophilic coating, a lubricious coating, use of a polyelectrolyte and a non-ionic hydrophilic polymer in a lubricious coating, an article, a medical device or component and a method of forming on a substrate a hydrophilic coating.

Abstract: The present invention provides an optical pressure-sensitive adhesive sheet excellent in anti-foaming release property in which whitening due to humidification hardly occurs. The invention relates to an optical pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition including: an acrylic polymer (A) which has a weight average molecular weight of 100,000 to 3,000,000 and is formed from a component including, as essential monomer components, a monomer having a nitrogen atom in a molecule thereof and a monomer having a hydroxyl group in a molecule thereof; and an acrylic polymer (B) having a weight average molecular weight of 1,000 to 30,000.

Abstract: A process for manufacturing a non-woven fabric having on its surface distributed elements having a physical dimension, comprises screen printing on wet fabric a desired shape using a paste that expands under heating by virtue of a puffing agent contained therein.

Abstract: A binder composition for a secondary battery, and an anode and a lithium battery that include the binder composition are disclosed. The binder composition may include: first nanoparticles having a glass transition temperature of about 60° C. or greater and an average particle diameter of about 100 nm or less; and a first polymer binder having a glass transition temperature of about 20° C. or less.

Abstract: To obtain a hydrophilic macromonomer mixture which is a highly polymerized hydrophilic macromonomer, has few components not bonded to the polymer chain after polymerization, and is less likely to leaching. Provided is a macromonomer mixture containing macromonomer A being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a polymerization initiator at an end thereof; and macromonomer B being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a chain transfer agent at an end thereof.

Abstract: The present application is directed to a non-aqueous composition. The composition comprises a blend of an acidic copolymer derived from a first group of monomers comprising at least one acidic monomer, and a basic copolymer derived from a second group of monomers comprising at least one basic monomer. The basic copolymer may comprise an amide functionality. In some embodiments, the composition comprises an acidic (meth)acrylic copolymer having a Tg less than 0° C., which is derived from a first group of monomers comprising at least one acidic monomer, and a basic (meth)acrylic copolymer having a Tg less than 0° C., which is derived from a second group of monomers comprising at least one basic monomer. Additionally, the composition may comprise a minimum of 0.10 moles of acid/base pairs per kilogram of composition.

Abstract: The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a polymer blend comprising a copolymer and an additional polymer, the copolymer comprising: a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and polymeric sidechains bonded to the backbone chain, the sidechains comprising a polymer immiscible with the backbone; the additional polymer consisting of a polymer miscible with the polymeric sidechains.

Abstract: The present invention relates to a resin composition for moisture absorbing film comprising polyethylene resin and polyacrylic acid partial sodium salt (PAPSS) or attapulgite synthesized acrylic amide (ATPGAA) as a moisture absorbent, moisture absorbing film for packaging, and a method for manufacturing film, and the present invention also relates to a resin composition for seasoned laver packaging film to be used for maintaining the high quality of the merchandize with good taste and tissue dryness.

Abstract: The purpose of the present invention is to provide a polymer composition which enables the steady and easy production of a temperature-responsive sheet. Provided is a polymer composition comprising a water-dispersible side-chain crystalline polymer and a water-dispersible amorphous polymer.

Abstract: The present invention refers to an improved composition for the production of vinyl aromatic polymers modified with rubber, in which a substantial impact resistance improvement of the final product is produced by the incorporation of a structure modifying additive in different steps of the polymerization, preferably during the process of co-continuity of phases and specially, during the inversion of phases interval. The additive is an insaturated compound of formula: wherein: R1, R3 each represents a saturated or unsaturated chain from C1 to C18, being equal or different from one another, R2, R4, R5 each represent, hydrogen, halogen or a carbonated chain from C1 to C18, being equal or different from one another, “n” being an integer number equal or grater than 1 and where the additive can be used either without mixing it in a concentration within the range of 0.025 to 5% in weight, or in mixtures with low molecular weight polymers in a weight ratio preferably from 5/1 to 1/5.

Abstract: The invention provides an optical resin composition being transparent, having suitable adhesion and necessary impact absorption for protection of an image display device etc., not affecting constituent materials of a image display panel, and being excellent in reliability, and an optical resin material using the same. Disclosed is an optical resin composition containing (A) a first acrylate derivative that is a compound having one polymerizable unsaturated bond in its molecule, (B) a second acrylate derivative that is a compound having two or more polymerizable unsaturated bonds in its molecule, and (C) an acrylate derivative polymer, and an optical resin material produced by curing reaction of the optical resin composition.

Abstract: The present invention provides rheology modifiers, which are water-soluble polymers having a weight average molecular weight (Mw) of at least 1?000?000 g/mol and an intrinsic viscosity of at least 2.5 dl/g, both as determined by size exclusion chromatography, and wherein the water-soluble polymers are in the form of solid particles. It also provides mixtures of rheology modifiers comprising a first rheology modifier, which is a water-soluble polymer having a weight average molecular weight (Mw) of at least 1?000?000 g/mol and an intrinsic viscosity of at least 2.5 dl/g, both as determined by size exclusion chromatography, and a second rheology modifier, which has a weight average molecular weight of from 2?000 g/mol to 800?000 g/mol. It also provides coating composition containing the rheology modifiers, respectively, mixtures of rheology modifiers, a process for their preparation, a process for coating a substrate using these coating compositions and substrates coated with these coating compositions.

Abstract: Kit for producing a bone cement paste, comprising a paste A and a paste B; paste A comprising at least one monomer for radical polymerization, at least one peroxide polymerization initiator and at least one tertiary amine, at least one amidine or a mixture of a tertiary amine and amidine; paste B comprising at least one monomer for radical polymerization, at least one heavy metal compound as polymerization accelerator, and as polymerization co-accelerator at least one sulfimide, at least one dicarboxylic acid imide or a mixture thereof, at least one of the pastes A and B comprising at least one filling agent that is insoluble in the monomer of paste A and/or the monomer of paste B.

Abstract: A pneumatic tire having a tread, the tread comprising a rubber composition comprising: a copolymer comprising a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and polymeric sidechains bonded to the backbone chain, the sidechains comprising a polymer capable of exhibiting a lower critical solution temperature (LCST); optionally, at least one additional diene based elastomer; and a filler selected from the group consisting of carbon black and silica.

Abstract: Radiopaque polymers have a main chain and a plurality of amide groups which have bound to the amide nitrogen atom thereof an organohalide group that is pendant to the polymer main chain, the organo halide group including one or more iodine and/or bromine atoms thereon. The polymer may be a modified polyamide polymer, copolymer or block copolymer or a modified poly(meth)acrylamide or (meth)acrylamide copolymer or block copolymer. The polymers may be employed in medical devices and are useful for instance to track the movement of a catheter through the body or the inflation of a balloon at a site. The polymers may be made by coupling reactions performed on preexisting amide polymers.

Abstract: The present invention relates to a resin composition for moisture absorbing film comprising polyethylene resin and polyacrylic acid partial sodium salt (PAPSS) or attapulgite synthesized acrylic amide (ATPGAA) as a moisture absorbent, moisture absorbing film for packaging, and a method for manufacturing film, and the present invention also relates to a resin composition for seasoned layer packaging film to be used for maintaining the high quality of the merchandize with good taste and tissue dryness.

Abstract: The present invention is directed to a method of making a graft copolymer, comprising the steps of obtaining a first polymer comprising at least one carbon-carbon double bond, the first polymer derived from at least one first monomer, the at least one first monomer comprising a conjugated diene monomer; obtaining a second polymer, the second polymer capable of exhibiting a lower critical solution temperature (LCST) and comprising a terminal functional group capable of reacting with the carbon-carbon double bond; a reacting the second polymer with the first polymer to form a graft copolymer, the graft copolymer comprising a backbone derived from the first polymer and sidechains derived from the second polymer.

Abstract: The present invention is directed to a copolymer comprising: a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and polymeric sidechains bonded to the backbone chain, the sidechains comprising a polymer capable of exhibiting a lower critical solution temperature (LCST).

Abstract: The present invention is directed to a method of making a graft copolymer, comprising the steps of: obtaining a first polymer comprising at least one carbon-carbon double bond, the first polymer derived from at least one monomer, the at least one monomer comprising a conjugated diene monomer; polymerizing a second monomer in the presence of a thiocarbonylthio RAFT chain transfer agent to form a polymer comprising a terminal thiocarbonylthio group; cleaving the terminal thiocarbonylthio group to a thiol group to form the second polymer comprising a terminal thiol group; reacting the second polymer with the first polymer to form a graft copolymer, the graft copolymer comprising a backbone derived from the first polymer and sidechains derived from the second polymer.

Abstract: An adhesive film comprising a substrate and an adhesive layer on said substrate, said adhesive layer comprising: (A) a carboxyl group-containing (meth)acrylate polymer having a glass transition temperature (Tg) of 25 C or lower, said carboxyl group-containing (meth)acrylate polymer having a percent number of repeating units of 4.0 to 25% based on the total number of repeating units of the (meth)acrylate polymer; and (B) an amino group-containing (meth)acrylate polymer having a glass transition temperature (Tg) of 75 C or higher, said amino group-containing (meth)acrylate polymer having a percent number of amino group-containing repeating units of 3.5 to 15% based on the total number of repeating units of the (meth)acrylate polymer, wherein the ratio by weight of said component (A) to said component (B) is from 62:38 to 75:25.

Abstract: The invention provides new aliphatic diester-di-acid-containing PEA polymer compositions with significant improvement in hydrolytic degradation rates as compared to aliphatic di-acid-containing PEA polymers. The di-acids used in the invention PEA compositions include non-toxic fatty aliphatic homologs. These molecules inherently contain two-ester groups, which easily can be cleaved by biotic (enzymatic) and abiotic hydrolysis. Additional di-acid-type compounds useful for active polycondensation are ?,?-alkylene dicarboxylates composed of short aliphatic non toxic diols and di-acids. In addition, the invention PEA polymer compositions optionally can include a second monomer, such as a C-protected L-lysine-based monomer, to introduce additional chain flexibility into the polymer. The invention PEA polymer compositions are useful for delivery of bioactive agents when administered internally.

Abstract: A method of preparing core-shell submicron spheres is disclosed. The method comprises steps hereafter. An emulsion containing a core monomer is heated to a temperature of 10° C. below its boiling point to the boiling point. A core forming step is performed by adding an initiator solution to the heated emulsion to form cores by polymerizing the core monomer. When the conversion of the above polymerization is 10% to 95%, a shell forming step is performed by adding a shell monomer into the emulsion, at a temperature of 50° C. below the emulsion's boiling point to the boiling point thereof, to form shells, respectively surrounding the cores, by polymerizing the shell monomer.

Abstract: Disclosed is an energy curable coating composition for roll coating, a product, and continuous process of applying the energy curable coating composition to a substrate. The energy curable coating composition has a substantially constant viscosity and includes an energy curable resin having plurality of texturing particles suspended therein. The substantially constant viscosity of the energy curable coating composition remains at least less than about 1500 centipoise at approximately 15° C. to approximately 40° C., during recirculation, in a coating pan, and prior to application using a roll coating apparatus. The plurality of texturing particles provide a predetermined texture to a cured energy coating composition. The continuous process of applying the energy curable coating to a substrate allows the process to continuously operate until the energy curable coating composition is depleted from the container.

Abstract: The present invention is directed to providing a pressure-sensitive adhesive with good initial tack and good adhesion at low temperature. Generally, the pressure-sensitive adhesive composition comprises (1) a carboxylic group-containing (meth)acrylic tacky polymer having a weight average molecular weight of less than 800,000 and a glass transition temperature of ?100° C. to ?30° C., and (2) an amino group-containing (meth)acrylic non-tacky polymer having a weight average molecular weight of from 30,000 to 100,000 and a glass transition temperature of 20° C. to 90° C. The amino group-containing (meth)acrylic non-tacky polymer (2) is present in an amount of no less than 1 parts by mass and less than 20 parts by mass on a basis of 100 parts by mass of said carboxylic group-containing (meth)acrylic tacky polymer (1).

Abstract: An additive composition for mortars, exterior insulation finish systems, self-leveling compounds and joint compounds is disclosed. The additive composition contains a nitrogen-containing polymer and a reactive agent capable of forming a crosslinking reaction with the nitrogen-containing polymer. Small amounts of the additive composition contained in a product not only can increase one or more properties of the product but can also minimize the use of redispersible polymers in the product.

Abstract: A process for creating polyolefin blends from waste streams with controlled rheological properties can include processing a waste stream to make a mixture comprising a mixture comprising polypropylene and polyethylene and compounding the mixture with one or more peroxides or nitroxides to produce a polyolefin blend. For example, a process can include: determining the required melt flow rate of the end product; determining the ratio of polyethylene to polypropylene to achieve the required melt flow rate; effecting a separation of polypropylene from polyethylene to achieve the desired composition; determining the amount of peroxide or peroxide concentrate required to increase the melt flow rate to the required level; melt compounding the mixture; evaluating the melt flow rate of the product; and adjusting the composition of polyethyelene and polypropylene or the amount of peroxide added if necessary to achieve the required melt flow rate.

Abstract: Linear block copolymers that have at least one hydrophilic block and at least one hydrophobic block, wherein the hydrophilic block of the copolymer has at least one carboxylic acid functionality (or salt thereof) that can readily decarboxylate. These copolymers are useful as binders and/or dispersants in inkjet inks.

Abstract: A preferably pulverulent dispersing agent comprising as the component having a dispersing action the combination of (a) at least one representative of polycarboxylate ethers with a weight content of from 0.1 to 20%, (b) at least one representative of polycarboxylate esters with a weight content of from 0 to 20% and (c) at least one representative of non-charged copolymers with a weight content of from 0.1 to 20%, which is accessible by co-spray drying the individual components and which is suitable for controlling the flowability of aqueous chemical construction suspensions is claimed. By the dispersing agents which form in situ according to the invention, a controllable subsequent dosing of dispersing agent can be achieved without an additional process step.